library /*isNonNullableByDefault*/;
import self as self;
import "dart:core" as core;

typedef ContraFunction<contravariant T extends core::Object? = dynamic> = (T%) → void;
typedef InvFunction<invariant T extends core::Object? = dynamic> = (T%) → T%;
class Contravariant<contravariant T extends core::Object? = dynamic> extends core::Object {
  synthetic constructor •() → self::Contravariant<self::Contravariant::T%>
    : super core::Object::•()
    ;
}
class Invariant<invariant T extends core::Object? = dynamic> extends core::Object {
  synthetic constructor •() → self::Invariant<self::Invariant::T%>
    : super core::Object::•()
    ;
}
class A<contravariant T extends core::Object? = dynamic, U extends core::Object? = dynamic, V extends core::Object? = dynamic> extends core::Object {
  final field (self::A::T%) →? void field = null;
  synthetic constructor •() → self::A<self::A::T%, self::A::U%, self::A::V%>
    : super core::Object::•()
    ;
  method method(self::A::T% t, (self::A::U%) → void u, generic-covariant-impl self::A::V% v) → void {}
  method method2(self::A::T% x, [self::A::T? y = #C1]) → void {}
  set x(self::A::T% t) → void {}
  get mapContra() → core::Map<self::A::U%, self::Contravariant<self::A::V%>>
    return core::Map::•<self::A::U%, self::Contravariant<self::A::V%>>();
  get mapContraFn() → core::Map<self::A::U%, (self::A::V%) → void>
    return core::Map::•<self::A::U%, (self::A::V%) → void>();
  get mapInv() → core::Map<self::A::U%, self::Invariant<self::A::V%>>
    return core::Map::•<self::A::U%, self::Invariant<self::A::V%>>();
  get mapInvFn() → core::Map<self::A::U%, (self::A::V%) → self::A::V%>
    return core::Map::•<self::A::U%, (self::A::V%) → self::A::V%>();
}
class B<invariant T extends core::Object? = dynamic> extends core::Object {
  field self::B::T? x = null;
  synthetic constructor •() → self::B<self::B::T%>
    : super core::Object::•()
    ;
  method method(self::B::T% x) → self::B::T%
    return x;
  set y(self::B::T% x) → void {}
}
class C<contravariant T extends core::Object? = dynamic> extends core::Object {
  final field (self::C::T%) →? void field = null;
  synthetic constructor •() → self::C<self::C::T%>
    : super core::Object::•()
    ;
  method method(self::C::T% x, [self::C::T? y = #C1]) → void {}
  set x(self::C::T% t) → void {}
}
abstract class D<T extends core::Object? = dynamic> extends core::Object {
  synthetic constructor •() → self::D<self::D::T%>
    : super core::Object::•()
    ;
  abstract method method(generic-covariant-impl self::D::T% x) → core::int;
}
class E<invariant T extends core::Object? = dynamic> extends core::Object {
  final field (self::E::T%) → void f;
  constructor •((self::E::T%) → void f) → self::E<self::E::T%>
    : self::E::f = f, super core::Object::•()
    ;
  method method(self::E::T% x) → core::int {
    let final self::E::T% #t1 = x in this.{self::E::f}.call(#t1);
    return 0;
  }
}
class F<invariant T extends core::Object? = dynamic> extends self::E<self::F::T%> implements self::D<self::F::T%> {
  constructor •((self::F::T%) → void f) → self::F<self::F::T%>
    : super self::E::•(f)
    ;
  forwarding-stub method method(generic-covariant-impl self::F::T% x) → core::int
    return super.{self::E::method}(x);
}
class NoSuchMethod<invariant T extends core::Object? = dynamic> extends core::Object implements self::B<self::NoSuchMethod::T%> {
  synthetic constructor •() → self::NoSuchMethod<self::NoSuchMethod::T%>
    : super core::Object::•()
    ;
  method noSuchMethod(core::Invocation _) → dynamic
    return 3;
  no-such-method-forwarder get x() → self::NoSuchMethod::T?
    return this.{self::NoSuchMethod::noSuchMethod}(new core::_InvocationMirror::_withType(#C2, 1, #C3, #C4, core::Map::unmodifiable<core::Symbol*, dynamic>(#C5))) as{TypeError,ForDynamic,ForNonNullableByDefault} self::NoSuchMethod::T?;
  no-such-method-forwarder method method(self::NoSuchMethod::T% x) → self::NoSuchMethod::T%
    return this.{self::NoSuchMethod::noSuchMethod}(new core::_InvocationMirror::_withType(#C6, 0, #C3, core::List::unmodifiable<dynamic>(<dynamic>[x]), core::Map::unmodifiable<core::Symbol*, dynamic>(#C5))) as{TypeError,ForDynamic,ForNonNullableByDefault} self::NoSuchMethod::T%;
  no-such-method-forwarder set y(self::NoSuchMethod::T% x) → void
    return this.{self::NoSuchMethod::noSuchMethod}(new core::_InvocationMirror::_withType(#C7, 2, #C3, core::List::unmodifiable<dynamic>(<dynamic>[x]), core::Map::unmodifiable<core::Symbol*, dynamic>(#C5)));
  no-such-method-forwarder set x(self::NoSuchMethod::T? value) → void
    return this.{self::NoSuchMethod::noSuchMethod}(new core::_InvocationMirror::_withType(#C8, 2, #C3, core::List::unmodifiable<dynamic>(<dynamic>[value]), core::Map::unmodifiable<core::Symbol*, dynamic>(#C5)));
}
static method main() → dynamic {
  self::A<core::int, core::num, core::String> a = new self::A::•<core::int, core::num, core::String>();
  self::expect(null, a.{self::A::field});
  a.{self::A::method}(3, (core::num num) → void {}, "test");
  a.{self::A::method2}(3);
  a.{self::A::x} = 3;
  core::Map<core::num, self::Contravariant<core::String>> mapContra = a.{self::A::mapContra} as{TypeError,CovarianceCheck,ForNonNullableByDefault} core::Map<core::num, self::Contravariant<core::String>>;
  core::Map<core::num, (core::String) → void> mapContraFn = a.{self::A::mapContraFn} as{TypeError,CovarianceCheck,ForNonNullableByDefault} core::Map<core::num, (core::String) → void>;
  core::Map<core::num, self::Invariant<core::String>> mapInv = a.{self::A::mapInv} as{TypeError,CovarianceCheck,ForNonNullableByDefault} core::Map<core::num, self::Invariant<core::String>>;
  core::Map<core::num, (core::String) → core::String> mapInvFn = a.{self::A::mapInvFn} as{TypeError,CovarianceCheck,ForNonNullableByDefault} core::Map<core::num, (core::String) → core::String>;
  self::B<core::int> b = new self::B::•<core::int>();
  b.{self::B::x} = 3;
  self::expect(3, b.{self::B::x});
  self::expect(3, b.{self::B::method}(3));
  b.{self::B::y} = 3;
  self::C<core::int> c = new self::C::•<core::int>();
  self::expect(null, c.{self::C::field});
  c.{self::C::method}(3, 2);
  c.{self::C::x} = 3;
  self::D<core::Object> d = new self::F::•<core::String>((core::String s) → void {});
  d.{self::D::method}("test");
  self::NoSuchMethod<core::num> nsm = new self::NoSuchMethod::•<core::num>();
  self::expect(3, nsm.{self::B::method}(3));
}
static method expect(dynamic expected, dynamic actual) → dynamic {
  if(!expected.{core::Object::==}(actual)) {
    throw "Mismatch: expected=${expected}, actual=${actual}";
  }
}

constants  {
  #C1 = null
  #C2 = #x
  #C3 = <core::Type*>[]
  #C4 = <dynamic>[]
  #C5 = core::_ImmutableMap<core::Symbol*, dynamic> {_kvPairs:#C4}
  #C6 = #method
  #C7 = #y=
  #C8 = #x=
}